Language construct
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In computer programming, a language construct is a syntactically allowable part of a program that may be formed from one or more lexical tokens in accordance with the rules of the programming language, as defined by in the ISO/IEC 2382 standard (ISO/IEC JTC 1).[1] A term is defined as a "linguistic construct in a conceptual schema language that refers to an entity".[1]
While the terms "language construct" and "control structure" are often used synonymously, there are additional types of logical constructs within a computer program, including variables, expressions, functions, or modules.
Control flow statements (such as conditionals, foreach loops, while loops, etc.) are language constructs, not functions. So while (true) is a language construct, while add(10) is a function call.
Examples of language constructs
[edit ]In PHP print is a language construct.[2]
<?php print 'Hello world'; ?>
is the same as:
<?php print('Hello world'); ?>
In Java a class is written in this format:
publicclass MyClass{ //Code . . . . . . }
In C++ a class is written in this format:
classMyCPlusPlusClass{ //Code . . . . };
References
[edit ]- ^ a b "ISO/IEC 2382, Information technology — Vocabulary".
- ^ "PHP: print - Manual". www.php.net. Retrieved 2022年11月18日.
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